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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Earnings per share [abstract]
Net income (loss)	$ 4,574	$ (1,435)
Net income attributable to non-controlling interests	(605)	(110)
Net income attributable to equity holders of Barrick Gold Corporation - Basic	3,969	(1,545)
Net income attributable to equity holders of Barrick Gold Corporation - Diluted	$ 3,969	$ (1,545)
Weighted average shares outstanding - Basic (in shares)	1,758	1,167
Weighted average shares outstanding - Diluted (in shares)	1,758	1,167
Basic earnings per share data attributable to the equity holders of Barrick Gold Corporation (in USD per share)	$ 2.26	$ (1.32)
Diluted earnings per share data attributable to the equity holders of Barrick Gold Corporation (in USD per share)	$ 2.26	$ (1.32)

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The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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